int main(int argc, char** argv) {
if(argc != 3) {
fprintf(stderr, "Usage: %s <port> /dev/sgX\n", argv[0]);
return 1;
}
struct stlink *sl = stlink_quirk_open(argv[2], 0);
if (sl == NULL)
return 1;
if(stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE)
stlink_enter_swd_mode(sl);
uint32_t chip_id;
stlink_read_mem32(sl, 0xE0042000, 4);
chip_id = sl->q_buf[0] | (sl->q_buf[1] << 8) | (sl->q_buf[2] << 16) |
(sl->q_buf[3] << 24);
printf("Chip ID is %08x.\n", chip_id);
const struct chip_params* params = NULL;
for(int i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
if(devices[i].chip_id == (chip_id & 0xFFF)) {
params = &devices[i];
break;
}
}
if(params == NULL) {
fprintf(stderr, "Cannot recognize the connected device!\n");
return 0;
}
printf("Device connected: %s\n", params->description);
printf("Device parameters: SRAM: 0x%x bytes, Flash: up to 0x%x bytes in pages of 0x%x bytes\n",
params->sram_size, params->max_flash_size, params->flash_pagesize);
FLASH_PAGE = params->flash_pagesize;
uint32_t flash_size;
stlink_read_mem32(sl, 0x1FFFF7E0, 4);
flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
printf("Flash size is %d KiB.\n", flash_size);
// memory map is in 1k blocks.
current_memory_map = make_memory_map(params, flash_size * 0x400);
int port = atoi(argv[1]);
while(serve(sl, port) == 0);
stlink_close(sl);
return 0;
}
int main(int argc, char *argv[]) {
// set scpi lib debug level: 0 for no debug info, 10 for lots
const int scsi_verbose = 2;
char *dev_name;
switch (argc) {
case 1:
fputs(
"\nUsage: stlink-access-test /dev/sg0, sg1, ...\n"
"\n*** Notice: The stlink firmware violates the USB standard.\n"
"*** If you plug-in the discovery's stlink, wait a several\n"
"*** minutes to let the kernel driver swallow the broken device.\n"
"*** Watch:\ntail -f /var/log/messages\n"
"*** This command sequence can shorten the waiting time and fix some issues.\n"
"*** Unplug the stlink and execute once as root:\n"
"modprobe -r usb-storage && modprobe usb-storage quirks=483:3744:lrwsro\n\n",
stderr);
return EXIT_FAILURE;
case 2:
dev_name = argv[1];
break;
default:
return EXIT_FAILURE;
}
fputs("*** stlink access test ***\n", stderr);
fprintf(stderr, "Using sg_lib %s : scsi_pt %s\n", sg_lib_version(),
scsi_pt_version());
stlink_t *sl = stlink_quirk_open(dev_name, scsi_verbose);
if (sl == NULL)
return EXIT_FAILURE;
// we are in mass mode, go to swd
stlink_enter_swd_mode(sl);
stlink_current_mode(sl);
stlink_core_id(sl);
//----------------------------------------------------------------------
stlink_status(sl);
//stlink_force_debug(sl);
stlink_reset(sl);
stlink_status(sl);
#if 0
// core system control block
stlink_read_mem32(sl, 0xe000ed00, 4);
DD(sl, "cpu id base register: SCB_CPUID = got 0x%08x expect 0x411fc231", read_uint32(sl->q_buf, 0));
// no MPU
stlink_read_mem32(sl, 0xe000ed90, 4);
DD(sl, "mpu type register: MPU_TYPER = got 0x%08x expect 0x0", read_uint32(sl->q_buf, 0));
stlink_read_mem32(sl, 0xe000edf0, 4);
DD(sl, "DHCSR = 0x%08x", read_uint32(sl->q_buf, 0));
stlink_read_mem32(sl, 0x4001100c, 4);
DD(sl, "GPIOC_ODR = 0x%08x", read_uint32(sl->q_buf, 0));
#endif
#if 0
// happy new year 2011: let blink all the leds
// see "RM0041 Reference manual - STM32F100xx advanced ARM-based 32-bit MCUs"
#define GPIOC 0x40011000 // port C
#define GPIOC_CRH (GPIOC + 0x04) // port configuration register high
#define GPIOC_ODR (GPIOC + 0x0c) // port output data register
#define LED_BLUE (1<<8) // pin 8
#define LED_GREEN (1<<9) // pin 9
stlink_read_mem32(sl, GPIOC_CRH, 4);
uint32_t io_conf = read_uint32(sl->q_buf, 0);
DD(sl, "GPIOC_CRH = 0x%08x", io_conf);
// set: general purpose output push-pull, output mode, max speed 10 MHz.
write_uint32(sl->q_buf, 0x44444411);
stlink_write_mem32(sl, GPIOC_CRH, 4);
clear_buf(sl);
for (int i = 0; i < 100; i++) {
write_uint32(sl->q_buf, LED_BLUE | LED_GREEN);
stlink_write_mem32(sl, GPIOC_ODR, 4);
/* stlink_read_mem32(sl, 0x4001100c, 4); */
/* DD(sl, "GPIOC_ODR = 0x%08x", read_uint32(sl->q_buf, 0)); */
delay(100);
clear_buf(sl);
stlink_write_mem32(sl, GPIOC_ODR, 4); // PC lo
delay(100);
}
write_uint32(sl->q_buf, io_conf); // set old state
#endif
#if 0
// TODO rtfm: stlink doesn't have flash write routines
// writing to the flash area confuses the fw for the next read access
//stlink_read_mem32(sl, 0, 1024*6);
// flash 0x08000000 128kB
fputs("++++++++++ read a flash at 0x0800 0000\n", stderr);
stlink_read_mem32(sl, 0x08000000, 1024 * 6); //max 6kB
clear_buf(sl);
stlink_read_mem32(sl, 0x08000c00, 5);
stlink_read_mem32(sl, 0x08000c00, 4);
mark_buf(sl);
stlink_write_mem32(sl, 0x08000c00, 4);
stlink_read_mem32(sl, 0x08000c00, 256);
stlink_read_mem32(sl, 0x08000c00, 256);
#endif
#if 0
// sram 0x20000000 8kB
fputs("\n++++++++++ read/write 8bit, sram at 0x2000 0000 ++++++++++++++++\n\n", stderr);
clear_buf(sl);
stlink_write_mem8(sl, 0x20000000, 16);
mark_buf(sl);
stlink_write_mem8(sl, 0x20000000, 1);
stlink_write_mem8(sl, 0x20000001, 1);
stlink_write_mem8(sl, 0x2000000b, 3);
stlink_read_mem32(sl, 0x20000000, 16);
#endif
#if 0
// a not aligned mem32 access doesn't work indeed
fputs("\n++++++++++ read/write 32bit, sram at 0x2000 0000 ++++++++++++++++\n\n", stderr);
clear_buf(sl);
stlink_write_mem8(sl, 0x20000000, 32);
mark_buf(sl);
stlink_write_mem32(sl, 0x20000000, 1);
stlink_read_mem32(sl, 0x20000000, 16);
mark_buf(sl);
stlink_write_mem32(sl, 0x20000001, 1);
stlink_read_mem32(sl, 0x20000000, 16);
mark_buf(sl);
stlink_write_mem32(sl, 0x2000000b, 3);
stlink_read_mem32(sl, 0x20000000, 16);
mark_buf(sl);
stlink_write_mem32(sl, 0x20000000, 17);
stlink_read_mem32(sl, 0x20000000, 32);
#endif
#if 0
// sram 0x20000000 8kB
fputs("++++++++++ read/write 32bit, sram at 0x2000 0000 ++++++++++++\n", stderr);
mark_buf(sl);
stlink_write_mem8(sl, 0x20000000, 64);
stlink_read_mem32(sl, 0x20000000, 64);
mark_buf(sl);
stlink_write_mem32(sl, 0x20000000, 1024 * 8); //8kB
stlink_read_mem32(sl, 0x20000000, 1024 * 6);
stlink_read_mem32(sl, 0x20000000 + 1024 * 6, 1024 * 2);
#endif
#if 0
stlink_read_all_regs(sl);
stlink_step(sl);
fputs("++++++++++ write r0 = 0x12345678\n", stderr);
stlink_write_reg(sl, 0x12345678, 0);
stlink_read_reg(sl, 0);
stlink_read_all_regs(sl);
#endif
#if 0
stlink_run(sl);
stlink_status(sl);
stlink_force_debug(sl);
stlink_status(sl);
#endif
#if 1 /* read the system bootloader */
fputs("\n++++++++++ reading bootloader ++++++++++++++++\n\n", stderr);
stlink_fread(sl, "/tmp/barfoo", sl->sys_base, sl->sys_size);
#endif
#if 0 /* read the flash memory */
fputs("\n+++++++ read flash memory\n\n", stderr);
/* mark_buf(sl); */
stlink_read_mem32(sl, 0x08000000, 4);
#endif
#if 0 /* flash programming */
fputs("\n+++++++ program flash memory\n\n", stderr);
stlink_fwrite_flash(sl, "/tmp/foobar", 0x08000000);
#endif
#if 0 /* check file contents */
fputs("\n+++++++ check flash memory\n\n", stderr);
{
const int res = stlink_fcheck_flash(sl, "/tmp/foobar", 0x08000000);
printf("_____ stlink_fcheck_flash() == %d\n", res);
}
#endif
#if 0
fputs("\n+++++++ sram write and execute\n\n", stderr);
stlink_fwrite_sram(sl, "/tmp/foobar", sl->sram_base);
stlink_run_at(sl, sl->sram_base);
#endif
stlink_run(sl);
stlink_status(sl);
//----------------------------------------------------------------------
// back to mass mode, just in case ...
stlink_exit_debug_mode(sl);
stlink_current_mode(sl);
stlink_close(sl);
//fflush(stderr); fflush(stdout);
return EXIT_SUCCESS;
}
